MedlinePlus Medical Encyclopedia: Arrhythmias
Dysrhythmias; Abnormal heart rhythms; Bradycardia; Tachycardia An arrhythmia is a disorder of the heart rate (pulse) or heart rhythm, such as beating too fast (tachycardia), too slow (bradycardia), or irregularly. The electrical impulse that ... [... more]
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Abortion - elective or therapeutic
Elective or therapeutic abortion is the deliberate termination of a pregnancy. Elective abortions are those initiated by personal choice. Roughly 20% of all pregnancies (excluding miscarriages) end in elective abortion. It has been reported that ... [... more]
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Abortion - threatened
A threatened abortion is a condition that suggests a miscarriage might take place before the 20th week of pregnancy. A small number of pregnant women have some vaginal bleeding, with or without abdominal cramps, during the first trimester of ... [... more]
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Thirst - absent
Not being thirsty at various times during the day is normal, if the body does not need fluid replacement. However, a quick change in the need for fluids should prompt a visit to your doctor. Follow your health care provider's recommendations. ... [... more]
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Therapeutic drug levels
Therapeutic drug level are laboratory tests to look for the presence and the amount of specific drugs in the blood. The sample is then taken to the laboratory, where it is checked for the particular drug specified by your health care ... [... more]
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Achilles tendinitis
Achilles tendinitis is inflammation, irritation, and swelling of the Achilles tendon (the tendon that connects the muscles of the calf to the heel). There are two large muscles in the calf, the gastrocnemius, and soleus. These muscles generate ... [... more]
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Sputum stain for mycobacteria
Acid fast bacilli stain; AFB stain; Tuberculosis smear; TB smear Sputum stain for mycobacteria is a test to check for a type of bacteria that cause tuberculosis and other kinds of infection. To obtain a sputum sample, you will be asked to cough ... [... more]
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ACTH (cosyntropin) stimulation test
ACTH (cosyntropin) stimulation test measures how well the adrenal glands respond to the hormone ACTH. ACTH is a hormone produced in the pituitary gland that stimulates the adrenal glands to release cortisol. The health care provider will measure ... [... more]
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Temper tantrums
Temper tantrums are disruptive or undesirable behaviors or emotional outbursts displayed in response to unmet needs or desires. They may also refer to an inability to control emotions due to frustration or difficulty expressing a particular need ... [... more]
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Thrombolytic therapy
Tissue plasminogen activator; TPA; Alteplase; Reteplase; Tenecteplase; Activase thrombolytic agent; Clot-dissolving agents; Reperfusion therapy Thrombolytic therapy is the use of drugs to break up or dissolve blood clots, which are the main cause ... [... more]
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Adolescent depression
Adolescent depression is a disorder that occurs during the teenage years, and involves persistent sadness, discouragement, loss of self-worth, and loss of interest in usual activities. Depression can be a temporary response to many situations and ... [... more]
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Adolescent pregnancy
Adolescent pregnancy is pregnancy in girls age 19 or younger. The rate of adolescent pregnancy has steadily declined since reaching an all-time high in 1990, mostly due to the increased use of condoms. Since no form of contraception is completely ... [... more]
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